WO1999011965A1 - Connector for high-pressure rubber hoses having improved tightness characteristics - Google Patents
Connector for high-pressure rubber hoses having improved tightness characteristics Download PDFInfo
- Publication number
- WO1999011965A1 WO1999011965A1 PCT/EP1998/004625 EP9804625W WO9911965A1 WO 1999011965 A1 WO1999011965 A1 WO 1999011965A1 EP 9804625 W EP9804625 W EP 9804625W WO 9911965 A1 WO9911965 A1 WO 9911965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insert
- groove
- pressure rubber
- connector
- rubber hoses
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims 5
- 230000035882 stress Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
Definitions
- the present invention relates to a connector for high- pressure rubber hoses having improved tightness characteristics. More particularly, the invention relates to a connector for hoses with helical and braided reinforcing webs.
- the high-pressure hoses are connected to each other or to devices by using connectors constituted by an insert, at the ends of which the hoses to be connected are inserted, and by a locking ring which can be fitted over an end of the insert like a sleeve, to anchor the hose to the connector.
- the high-pressure hose connector in which for example a fluid such as oil flows, must accordingly ensure both anchoring to the hose and tightness. In practice, it must be able to withstand the stresses induced by the stream of high-pressure fluid that flows inside the hoses, preventing its infiltration between the substrate and the insert, with consequent external leakage of oil.
- a ring is provided which internally has a toothed profile in order to provide anchoring by making contact with the metallic or textile reinforcement by circumferential clamping.
- the teeth of the ring can perforate the outer rubber sheath of the high-pressure hose or the sheath can even be removed so that the teeth of the ring rest directly against the reinforcement made of metal or textile material.
- This type of connector entails a first drawback due to the fact that the pressurized fluid flowing inside the hoses can overcome the contact force of the ring, thus triggering a leak of fluid which passes between the rubber and the insert.
- a conventional insert generally has quadrangular grooves arranged on its outer surface in order to allow the rubber substrate of the high-pressure hose to enter the cavities formed by the quadrangular grooves and behave like an 0-ring.
- the grooves of the outer surface of the insert are di scontinuit ie s whe re stres ses and de f ormations concentrate , with the consequence that the propagation of tears during use can accelerate .
- the hose deforms and changes from moving in the region directly ahead of the insert to becoming jammed under the insert. This produces additional cyclic stresses on the edges of the grooves of the insert, adding a dynamic component to the already present static one.
- the aim of the present invention is to provide a connector for high-pressure rubber hoses in which the tightness and reliability characteristics are improved with respect to a conventional connector.
- an object of the present invention is to provide a connector for high-pressure rubber hoses in which the axial sliding of the rubber of the hose is facilitated during ring compression, avoiding immobility, jamming and tearing of the material.
- Another object of the present invention is to provide a connector for high-pressure rubber hoses in which one of the two discontinuities of adjacent grooves can be eliminated in order to reduce the concentration of stresses.
- Another object of the present invention is to provide a connector for high-pressure rubber hoses in which the insert can be adapted to a plurality of different rings, hoses and tightening systems, since it closely resembles the ideal configuration of a smooth insert.
- Another object of the present invention is to provide a connector for high-pressure rubber hoses in which ring tightening allows better stress distribution.
- Another object of the present invention is to provide a connector for high-pressure rubber hoses which is highly reliable, relatively easy to manufacture and at competitive costs.
- a connector for high- pressure rubber hoses comprising an insert whereon a high- pressure rubber hose is meant to be inserted and a locking ring to lock the rubber hose around the insert, characterized in that said insert has, on its outer surface, in a substantially median region, at least one asymmetric groove which is inclined toward the outlet portion of the insert, in order to guide the distribution of localized tensions and avoid the risk of tearing in the elastomeric substrate of the hose.
- Figure 1 is a side view of an insert which is part of the connector according to the present invention.
- Figure 2 is a side view of a ring which is part of the connector according to the present invention.
- Figure 3 is an enlarged view of a detail of the profile of one of the grooves formed on the outer surface of the insert in the connector according to the present invention. Ways of carrying out the Invention
- the connector according to the invention comprises an insert 1, shown in Figure 1, and a ring 2, shown in Figure 2.
- the insert 1 is constituted by a substantially cylindrical body which has, on its outer surface, at least one groove 3 inclined toward the end for the insertion of the insert 1 in a rubber hose (not shown).
- a number of grooves 3 which can vary between one and six according to the size of the insert, but it is possible to provide a different number of grooves as deemed convenient.
- the grooves 3 have a profile as shown in detail in Figure 3.
- Each groove 3 therefore has, from the upstream region toward the downstream region of the insert, a first straight portion 4, parallel to the axis of the insert 1, and a first inclined portion 5, which is blended along a curved profile with the first straight portion 4 and, also with a curved profile, with a second inclined portion 6, which in turn is blended with a second straight portion 7 which is also parallel to the axis of the insert 1.
- the deepest point of the groove 3 is arranged asymmetrically with respect to the centerline of the groove.
- the inclination ⁇ of the second inclined portion 6 with respect to the second straight portion 7 can be variable, for example between 1 and 30 degrees.
- the grooves 3 are arranged in a central region of the portion of the insert 1 that is meant to be inserted in the rubber hose and are preceded, in an upstream region, by a plurality of microgrooves 12, which have a quadrangular profile and are of the conventional type, and in a downstream region by a conical-cylindrical portion 8 which allows the mobility of the rubber hose to be damped gradually.
- the conical-cylindrical portion thus allows the cyclic contractions of the rubber hose to be damped gradually.
- the microgrooves 12 having a more conventional profile have the purpose of providing an additional seal of the labyrinth type, which becomes effective mainly in advanced aging conditions.
- the ring 2 is instead shaped so as to have a profile with annular portions whose outside diameter increases from the region 9 meant to be arranged at the last groove 3 to the region 10 meant to abut against a flange 11 of the insert 1.
- each one of the grooves 3 also increases tightness against infiltrations of fluid, since the radial compression applied by the ring 2 to the high-pressure hose fitted over the insert 1, by acting on an inclined plane, generates an axial component which would tend to make the insert 1 exit from the rubber hose; this is prevented by the continuity constraint, so that the resultant at right angles to the inclined plane is greater than the radial component, thus increasing the sealing effect of the rubber of the hose on the profile of the insert 1.
- the connector according to the invention fully achieves the intended aim, since it allows to increase the tightness of the rubber hose around the insert by means of the clamping action applied by the outer ring.
- the grooves having a negative profile and inclined toward the outlet region of the insert, allow to reduce the stresses applied to the rubber of the hose when a high- pressure fluid flows inside it, producing mobility of the rubber hose on the insert and therefore producing damaging jamming of the rubber on the edges of the grooves required to ensure tightness.
- the grooves formed on the insert according to the invention act as stress reduction elements. This is also allowed by the coupling with the locking ring, since the compression force applied by the ring acts on the rubber of the hose which, being incompressible, is elongated toward the outlet region of the insert and thus redistributes along the insert, being assisted in this by the circular cross-section of the ring, which decreases in diameter toward the outlet portion of the insert, and by the cylindrical-conical configuration of the outlet portion of the insert.
- Another advantage of the connector according to the present invention is provided by the fact that the greater uniformity of the stresses transmitted from the insert to the rubber hose as a consequence of the movements of said hose with respect to conventional insert types makes it less difficult to match the profile of the insert with the profile of the ring and thus considerably increases the possibility to standardize the insert, using it accordingly on a large number of hoses with different types of ring and tightening system.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU90681/98A AU9068198A (en) | 1997-09-03 | 1998-07-23 | Connector for high-pressure rubber hoses having improved tightness characteristics |
KR10-2000-7002200A KR100536560B1 (en) | 1997-09-03 | 1998-07-23 | Connector for high-pressure rubber hoses having improved tightness characteristics |
EP98942606A EP1007875B1 (en) | 1997-09-03 | 1998-07-23 | Insert for connectors for high-pressure rubber hoses having improved tightness characteristics |
DE69815859T DE69815859T2 (en) | 1997-09-03 | 1998-07-23 | CONNECTOR FOR RUBBER PRESSURE HOSE WITH IMPROVED TIGHTNESS |
HK00107876A HK1029826A1 (en) | 1997-09-03 | 2000-12-07 | Insert for connectors for high-pressure rubber hoses having improved tightness characteristics |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT97MI002008A IT1294764B1 (en) | 1997-09-03 | 1997-09-03 | HIGH PRESSURE FITTING FOR RUBBER HOSES WITH IMPROVED SEALING CHARACTERISTICS |
ITMI97A002008 | 1997-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999011965A1 true WO1999011965A1 (en) | 1999-03-11 |
Family
ID=11377820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/004625 WO1999011965A1 (en) | 1997-09-03 | 1998-07-23 | Connector for high-pressure rubber hoses having improved tightness characteristics |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1007875B1 (en) |
KR (1) | KR100536560B1 (en) |
CN (1) | CN1111664C (en) |
AU (1) | AU9068198A (en) |
DE (1) | DE69815859T2 (en) |
ES (1) | ES2201526T3 (en) |
HK (1) | HK1029826A1 (en) |
IT (1) | IT1294764B1 (en) |
WO (1) | WO1999011965A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7014215B2 (en) | 2001-03-09 | 2006-03-21 | The Gates Corporation | Quick connect coupling |
CN103185179A (en) * | 2011-12-30 | 2013-07-03 | 邵亚剑 | Container guide pipe |
JP2017133614A (en) * | 2016-01-28 | 2017-08-03 | 株式会社デンソー | Piping |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040051311A1 (en) | 2002-09-13 | 2004-03-18 | Nilsen Martin J. | Pipe nipple |
CN100425899C (en) * | 2003-06-12 | 2008-10-15 | 伊利诺斯器械工程公司 | Pipe nipple |
DE102009011151B4 (en) * | 2009-02-28 | 2020-07-09 | Danfoss A/S | Sectional radiator separator and sectional radiator |
KR101259887B1 (en) | 2009-08-04 | 2013-05-02 | 한국과학기술원 | Transparent siloxane resin composition for optics |
CN108619543A (en) * | 2018-06-27 | 2018-10-09 | 东莞唯度电子科技服务有限公司 | Medical equipment pipeline sterilizing machine |
ES2932860T3 (en) * | 2019-12-19 | 2023-01-27 | Walter Stauffenberg Gmbh & Co Kg | Coupling piece for a hose coupling |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247092B (en) * | 1965-02-16 | 1967-08-10 | Neue Argus Ges M B H | Hose fitting for high pressure hoses |
EP0555650A1 (en) * | 1992-02-14 | 1993-08-18 | Hewing GmbH | Adaptive device for pipe couplings |
DE29510265U1 (en) * | 1995-06-24 | 1996-11-21 | Seppelfricke Armaturen GmbH & Co., 45881 Gelsenkirchen | Pipe connection |
-
1997
- 1997-09-03 IT IT97MI002008A patent/IT1294764B1/en active IP Right Grant
-
1998
- 1998-07-23 CN CN98808658A patent/CN1111664C/en not_active Expired - Fee Related
- 1998-07-23 AU AU90681/98A patent/AU9068198A/en not_active Abandoned
- 1998-07-23 WO PCT/EP1998/004625 patent/WO1999011965A1/en active IP Right Grant
- 1998-07-23 EP EP98942606A patent/EP1007875B1/en not_active Revoked
- 1998-07-23 ES ES98942606T patent/ES2201526T3/en not_active Expired - Lifetime
- 1998-07-23 KR KR10-2000-7002200A patent/KR100536560B1/en not_active IP Right Cessation
- 1998-07-23 DE DE69815859T patent/DE69815859T2/en not_active Expired - Fee Related
-
2000
- 2000-12-07 HK HK00107876A patent/HK1029826A1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247092B (en) * | 1965-02-16 | 1967-08-10 | Neue Argus Ges M B H | Hose fitting for high pressure hoses |
EP0555650A1 (en) * | 1992-02-14 | 1993-08-18 | Hewing GmbH | Adaptive device for pipe couplings |
DE29510265U1 (en) * | 1995-06-24 | 1996-11-21 | Seppelfricke Armaturen GmbH & Co., 45881 Gelsenkirchen | Pipe connection |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7014215B2 (en) | 2001-03-09 | 2006-03-21 | The Gates Corporation | Quick connect coupling |
US9039045B2 (en) | 2001-03-09 | 2015-05-26 | Gates Corporation | Quick connect coupling |
CN103185179A (en) * | 2011-12-30 | 2013-07-03 | 邵亚剑 | Container guide pipe |
JP2017133614A (en) * | 2016-01-28 | 2017-08-03 | 株式会社デンソー | Piping |
Also Published As
Publication number | Publication date |
---|---|
ES2201526T3 (en) | 2004-03-16 |
CN1269002A (en) | 2000-10-04 |
HK1029826A1 (en) | 2001-04-12 |
CN1111664C (en) | 2003-06-18 |
DE69815859D1 (en) | 2003-07-31 |
DE69815859T2 (en) | 2004-05-13 |
EP1007875B1 (en) | 2003-06-25 |
EP1007875A1 (en) | 2000-06-14 |
KR100536560B1 (en) | 2005-12-14 |
ITMI972008A1 (en) | 1999-03-03 |
IT1294764B1 (en) | 1999-04-12 |
KR20010023552A (en) | 2001-03-26 |
AU9068198A (en) | 1999-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR940011854B1 (en) | Pipe coupling | |
EP1007875B1 (en) | Insert for connectors for high-pressure rubber hoses having improved tightness characteristics | |
US3596931A (en) | Seal for lined pipe | |
US6460897B1 (en) | Connector for flexible pipes having at least one resilient sealing ring | |
EP2009340B1 (en) | Threaded joint with pressurizable seal | |
US6983940B2 (en) | Metallic seal | |
EP0696342A1 (en) | Quick-action coupling for pipes or hoses | |
US20070235948A1 (en) | Metallic seal | |
KR20220123312A (en) | Pipe clamps and pipe clamp assemblies for quick connection | |
FI86469B (en) | TAETNINGSRING FOER HOLKROERSFOGAR. | |
GB1564906A (en) | Reactive pipe joint | |
CA2114925C (en) | Bidirectional gasket having water energizing pockets | |
KR20230170696A (en) | Composite locking ring for pipe joints | |
KR101000307B1 (en) | Byte flange adapter for pipe connection | |
JPH0262495A (en) | Hose metal | |
GB1566844A (en) | Couplings for tubing | |
US5375450A (en) | Method of manufacturing couplings | |
KR0134887Y1 (en) | Pipe joint | |
KR100710573B1 (en) | Hose connector | |
RO113272B1 (en) | Sealing gasket | |
JP2561693B2 (en) | Pipe fitting | |
KR102414263B1 (en) | Grip ring for pipe joints | |
KR200416522Y1 (en) | No-hub coupling | |
GB2334316A (en) | Pipe connection | |
AU2014101163A4 (en) | Ground support device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 98808658.1 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998942606 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020007002200 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 1998942606 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
NENP | Non-entry into the national phase |
Ref country code: CA |
|
WWP | Wipo information: published in national office |
Ref document number: 1020007002200 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998942606 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020007002200 Country of ref document: KR |